Improvement in loom shuttle-box mechanisms



.JojsEPH M. smania. Q07

Patenied Deb. i2, 187i.

Improvement in Shuttle Box Mechanism.

UNITED STATES PATENT OFFICE JOSEPH M. STONE, OF NORTH ANDOVER,MASSACHUSETTS, ASSIGNOR TO HIM- SELF, GEORGE L. DAVIS, JOHN A. WILEY,GEORGE G. DAVIS, JOSEPH H. STONE, AND JAMES H. DAVIS, OF SAME PLACE.

IMPROVEMENT IN LOOM SHUTTLE-BOX MECHANISMS.

Specification forming part of Letters Patent No. 121,907, dated December12, 1871.

To cli 'whom it may concern:

Be it known that I, J osEPH M. STONE, of North Andover, in the county ofEssex and State of Massachusetts, have invented certain Improvements inMechanism for Working Shuttle-Boxes in Looms, of which the following isa specification:

My invention relates to an improved method of moving the shuttle-boxesin fancy looms, so called, to shift the shuttles by means of' twoeccentrics, one working in the periphery of the other, by the united andseparate action of which the shuttle-boxes are raised or lowered thedistance required to bring any given shuttle to the race 5 such, forinstance, as is the subject-matter of an application for Letters Patentby John Ashworth, now before the Patent Office, and upon which myinvention is an improvement.

In the application of said Ashworth the mechanisms for moving the boxesupon each side of the loom are independent of each other, so that eitherseries of boxes can be moved without moving the other 5 but in thelarger number of fancy looms used there is sufficient capacity ofchange, if two eccentrics upon each side of the loom are used and areconnected with those upon the opposite side, so that the two series ofboxes will be moved simultaneously in opposite directions by one set ofoperating mechanism, by which the mechanism is much simplified and thetwo series of boxes are made to counterpoise each other. My inventionconsists in the first place in the combination of the eccentrics uponone side of the loom with the corresponding eccentrics upon the oppositeside by two `concentric shafts, one working within the other, as will bedescribed. My invention consists in the second place in constructingthelevers which work the shuttle-boxes with a broad fork or slot, withparallel sides, at the ends, which receive the action of the eccentrics,in which the outermost eccentrics, work, which thus impart thereciprocating motion to the levers without any intermediate device.

In the drawing, Figure l is a plan of my improvement. Fig. 2 is a sideelevation, and Fig. 3 is a vertical sectional elevation through thecenter of the eccentric shafts.

The other parts of the loom and the devices by which the eccentrics areoperated are omitted, as they are not embraced within this invention.

A A are the shuttle-box levers, the ends c of which are connected withthe shuttle-boxes in the usual manner, and oscillate upon a fulcrum atb. B B are the eccentric shafts. To the inner shaft B the innereccentrics O O are attached at each side of the loom. This shaft isworked by the index-plate, D, which is fixed upon it, a half' revolutionat a time, in a manner similar to that shown by Ashworths application.

The drawing is not intended to represent the construction of the saidindex or driving-plates fully, but only their position and relation tothe eccentrics.

E E are the outer eccentrics, which are revolved upon the periphery ofthe inner eccentrics by the index or driving-plates F F, which are fixedupon the tubular shaft B which incloses the shaft B. This shaft isshownas beingmade in two parts and connected in the middle by a coupvling, J, which may be made to form a centralbearing for the inner shaft,while the intermediate portions of the inner shaft between this and theouter bearings may be left with a free space around it; and in broadlooms I employ a fixed bearing at this place in connection with theother bearings G G, to prevent thc shafts from springing. H H arecollars attached to the shaft B for securing the index-plates F to theshaft and adjusting them to the proper position. I I are the branches ofthe lever A, between which the outer eccentric works to oscillate thelever. Their inner faces are made true and parallel and at a distanceapart equal to the diameter of the outer eccentric.

What I claim isl. The combination of the two eccentrics upon one side ofthe loom with the corresponding eccentrics upon the opposite side bymeans ofthe two concentric shafts, substantiallyY as described.

2. In combination with the eccentrics the sluittlc-box levers, formedwith forked or slotted ends that embrace the outer eccentrics,substantially as described.

Executed July a7, 1871.

Witnesses: JOSEPH M. STONE.

E. D. LEAvITT, Jr.,

WM. C. HIBBARD. (95)

